Allied Moulded offers a complete line of wall and ceiling boxes for use in energy efficient homes to aid in sealing up the exterior walls and ceilings per construction methods outlined in 402.4 of the 2009 International Energy Conservation Code.
Allied Moulded’s Vapor Seal line of products include:
(A) Patented (U.S. Patent #6,908,003 B2) flexible polyurethane flange available for sealing box to air/vapor barrier. Flange products “V” are for single drywall and “V2” are for double drywall applications
(B) Bright common nails fit securely in specially designed supports and are angled for easy installation
(C) Tapered and machine tapped device holes allow device screw to be started by hand and speed installation time with high torque screwdrivers
(D) Cubic inch capacity clearly marked and easy for contractor and inspector to locate and identify
(E) Proudly UL® listed
(F) Knockouts on fiberglass boxes are complete, reducing drafts and easily removed with wire for no-tool installation
(G) Leveling ribs position face of box parallel to wall surface
(H) 2-Hour Fire Rated clearly marked for easy inspector identification
(I) Nonmetallic Speed “K” Klamps™ dependably secure wire in box
Residential Building Envelope – “Air Tightness”; IECC 2009
Residential Construction Changes – Department of Energy 30/30 Vision; The DOE set a goal to reduce building energy consumption by the 2012 IECC (International Energy Conservation Code) cycle. Current code changes within IECC 2009 have made major improvements on the way to the ultimate goal of 30% more energy efficient building construction.
Many States Have Adopted IECC 2009 – More to come soon!
As of December, 2018, reports show that 39 states have adopted the IECC 2009 (or newer) and many more are expecting to adopt it soon.
One of the main components affecting residential construction changes is “Air Leakage” in the building envelope. The IECC 2009 mandates building envelopes to be:
Sealed with caulking materials or…
Closed with gasket systems
Joints and seems sealed or taped or covered with a moisture vapor-permeable wrapping material
Areas for Air Leakage/Infiltration in Residential Building Envelopes
One of the main areas being addressed is the electrical wiring box penetrations (switches and receptacles). Boxes must be properly insulated around and behind along with openings being sealed/caulked closed and must be sealed to drywall and any vapor barrier system.
Options to Demonstrate Compliance
When tested, air leakage is <7 ACH with a blower door at pressure of 33.5 psf (50 pa) (Section 402.4.2.1 IECC2009)
Field verification of construction methods per table (402.4.2 IECC 2009):
Criteria: Batt insulation is cut to fit around wires or sprayed/blown insulation extends behind wiring
Component: Electrical Box on Exterior Walls
Criteria: Air barrier extends behind boxes or “AIR SEALED-TYPE BOXES” are to be installed
Allied Moulded developed a patented “Air Sealed Electrical Box” for this application in the Minnesota market in 2000 to meet the MN Energy Code Chapter 7670 adopted in 1994. These products have been manufactured, sold and installed successfully in this market while providing electricians, insulation contractors and drywall contractors a solution to comply with this “Air Tight” building envelope construction method.